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HỆ THỐNG MẠNG LAN NỘI BỘ TRÊN INFINITI FX35, FX45 2003
LAN-1 LAN SYSTEM K ELECTRICAL CONTENTS C D E F G H I J L M SECTION LAN A B LAN Revision; 2004 April 2003 FX LAN SYSTEM CAN PRECAUTIONS 4 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN- SIONER” 4 Precautions When Using CONSULT-II 4 CHECK POINTS FOR USING CONSULT-II 4 Precautions For Trouble Diagnosis 4 CAN SYSTEM 4 Precautions For Harness Repair 5 CAN SYSTEM 5 CAN COMMUNICATION 6 System Description 6 CAN Communication Unit 6 TYPE 1/TYPE2 6 TYPE 3 9 TYPE 4/TYPE5 13 TYPE 6 16 CAN SYSTEM (TYPE 1) 20 System Description 20 Component Parts and Harness Connector Location 20 Wiring Diagram - CAN - 21 Work Flow 23 CHECK SHEET 25 CHECK SHEET RESULTS (EXAMPLE) 27 Circuit Check Between TCM and Data Link Con- nector 40 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 40 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) 41 ECM Circuit Check 41 TCM Circuit Check 42 Display Unit Circuit Check 42 Data Link Connector Circuit Check 43 BCM Circuit Check 43 Steering Angle Sensor Circuit Check 44 Unified Meter and A/C Amp. Circuit Check 44 ABS Actuator and Electric Unit (Control Unit) Circuit Check 45 IPDM E/R Circuit Check 45 CAN Communication Circuit Check 46 IPDM E/R Ignition Relay Circuit Check 50 Component Inspection 50 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 50 CAN SYSTEM (TYPE 2) 51 System Description 51 Component Parts and Harness Connector Location 51 Wiring Diagram - CAN - 52 Work Flow 54 CHECK SHEET 56 CHECK SHEET RESULTS (EXAMPLE) 58 Circuit Check Between TCM and Data Link Con- nector 73 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 73 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) 74 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 75 ECM Circuit Check 75 TCM Circuit Check 76 Display Unit Circuit Check 76 Data Link Connector Circuit Check 77 BCM Circuit Check 77 Steering Angle Sensor Circuit Check 78 Unified Meter and A/C Amp. Circuit Check 78 ABS Actuator and Electric Unit (Control Unit) Circuit Check 79 Driver Seat Control Unit Circuit Check 79 IPDM E/R Circuit Check 80 CAN Communication Circuit Check 81 IPDM E/R Ignition Relay Circuit Check 85 Component Inspection 85 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 85 CAN SYSTEM (TYPE 3) 86 System Description 86 Component Parts and Harness Connector Location 86 LAN-2 Revision; 2004 April 2003 FX Schematic 87 Wiring Diagram - CAN - 88 Work Flow 91 CHECK SHEET 93 CHECK SHEET RESULTS (EXAMPLE) 96 Circuit Check Between TCM and Data Link Con- nector 115 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 116 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) .116 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 117 ECM Circuit Check 118 TCM Circuit Check 118 Display Control Unit Circuit Check 119 Low Tire Pressure Warning Control Unit Circuit Check 119 ICC Unit Circuit Check 120 Intelligent Key Unit Circuit Check 120 Data Link Connector Circuit Check 121 BCM Circuit Check 121 Steering Angle Sensor Circuit Check 122 Unified Meter and A/C Amp. Circuit Check 122 ICC Sensor Circuit Check 123 ABS Actuator and Electric Unit (Control Unit) Circuit Check 123 Driver Seat Control Unit Circuit Check 124 IPDM E/R Circuit Check 125 CAN Communication Circuit Check 126 IPDM E/R Ignition Relay Circuit Check 131 Component Inspection 131 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 131 CAN SYSTEM (TYPE 4) 132 System Description 132 Component Parts and Harness Connector Location .132 Schematic 133 Wiring Diagram - CAN - 134 Work Flow 137 CHECK SHEET 139 CHECK SHEET RESULTS (EXAMPLE) 141 Circuit Check Between TCM and Data Link Con- nector 155 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 155 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) .156 ECM Circuit Check 156 TCM Circuit Check 157 Display Unit Circuit Check 157 AWD Control Unit Circuit Check 158 Data Link Connector Circuit Check 158 BCM Circuit Check 159 Steering Angle Sensor Circuit Check 159 Unified Meter and A/C Amp. Circuit Check 160 ABS Actuator and Electric Unit (Control Unit) Circuit Check 160 IPDM E/R Circuit Check 161 CAN Communication Circuit Check 162 IPDM E/R Ignition Relay Circuit Check 165 Component Inspection 165 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 165 CAN SYSTEM (TYPE 5) 166 System Description 166 Component Parts and Harness Connector Location .166 Schematic 167 Wiring Diagram - CAN - 168 Work Flow 171 CHECK SHEET 173 CHECK SHEET RESULTS (EXAMPLE) 175 Circuit Check Between TCM and Data Link Con- nector 191 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 191 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) .192 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 193 ECM Circuit Check 193 TCM Circuit Check 194 Display Unit Circuit Check 194 AWD Control Unit Circuit Check 195 Data Link Connector Circuit Check 195 BCM Circuit Check 196 Steering Angle Sensor Circuit Check 196 Unified Meter and A/C Amp. Circuit Check 197 ABS Actuator and Electric Unit (Control Unit) Circuit Check 197 Driver Seat Control Unit Circuit Check 198 IPDM E/R Circuit Check 199 CAN Communication Circuit Check 199 IPDM E/R Ignition Relay Circuit Check 204 Component Inspection 204 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 204 CAN SYSTEM (TYPE 6) 205 System Description 205 Component Parts and Harness Connector Location .205 Schematic 206 Wiring Diagram - CAN - 207 Work Flow 210 CHECK SHEET 212 CHECK SHEET RESULTS (EXAMPLE) 215 Circuit Check Between TCM and Data Link Con- nector 236 Circuit Check Between Data Link Connector and Unified Meter and A/C Amp. 237 Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control Unit) .237 Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver Seat Control Unit 238 ECM Circuit Check 239 TCM Circuit Check 239 Display Control Unit Circuit Check 240 Low Tire Pressure Warning Control Unit Circuit Check 240 LAN-3 C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX AWD Control Unit Circuit Check 241 ICC Unit Circuit Check 241 Intelligent Key Unit Circuit Check 242 Data Link Connector Circuit Check 242 BCM Circuit Check 243 Steering Angle Sensor Circuit Check 243 Unified Meter and A/C Amp. Circuit Check 244 ICC Sensor Circuit Check 244 ABS Actuator and Electric Unit (Control Unit) Circuit Check 245 Driver Seat Control Unit Circuit Check 245 IPDM E/R Circuit Check 246 CAN Communication Circuit Check 247 IPDM E/R Ignition Relay Circuit Check 252 Component Inspection 252 ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- TION 252 LAN-4 [CAN] PRECAUTIONS Revision; 2004 April 2003 FX [CAN] PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” AKS007WY The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and SB section of this Service Man- ual. WARNING: ● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be per- formed by an authorized NISSAN/INFINITI dealer. ● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per- sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. ● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. Precautions When Using CONSULT-II AKS0058H When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER. CAUTION: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication. CHECK POINTS FOR USING CONSULT-II 1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle? – If YES, GO TO 2. – If NO, GO TO 5. 2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis results? – If YES, GO TO 3. – If NO, GO TO 4. 3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection. 4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica- tion. Therefore, erase the self-diagnosis results. 5. Diagnose CAN communication system. Refer to LAN-6, " CAN Communication Unit" . Precautions For Trouble Diagnosis AKS0058I CAN SYSTEM ● Do not apply voltage of 7.0V or higher to the measurement terminals. ● Use the tester with its open terminal voltage being 7.0V or less. ● Be sure to turn ignition switch off and disconnect negative battery terminal before checking the circuit. PRECAUTIONS LAN-5 [CAN] C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX Precautions For Harness Repair AKS0058J CAN SYSTEM ● Solder the repaired parts, and wrap with tape. [Frays of twisted line must be within 110 mm (4.33 in)] ● Do not perform bypass wire connections for the repair parts. (The spliced wire will become separated and the characteristics of twisted line will be lost.) PKIA0306E PKIA0307E LAN-6 [CAN] CAN COMMUNICATION Revision; 2004 April 2003 FX CAN COMMUNICATION PFP:23710 System Description AKS007GA CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul- tiplex communication line with high data communication speed and excellent error detection ability. Many elec- tronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. CAN Communication Unit AKS007Z4 Go to CAN system, when selecting your car model from the following table. ×: Applicable TYPE 1/TYPE2 System Diagram ● Type1 Body type Wagon Axle 2WD AWD Engine VQ35DE VQ35DE/VK45DE Transmission A/T Brake control VDC Navigation system ×× Low tire pressure warning system ×× ICC system ×× Intelligent Key system ×× Automatic drive positioner ×× ×× CAN system type 123456 CAN system trouble diagnosis LAN-20 LAN-51 LAN-86 LAN-132 LAN-166 LAN-205 SKIA6171E CAN COMMUNICATION LAN-7 [CAN] C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX ● Type2 Input/output Signal Chart T: Transmit R: Receive SKIA6172E Signals ECM TCM Dis- play unit BCM Steer- ing angle sensor Unified meter and A/ C amp. ABS actua- tor and electric unit (con- trol unit) Driver seat control unit IPDM E/R Engine speed signal T R R R R Engine status signal T R Engine coolant temperature signal T R R A/T self-diagnosis signal R T Accelerator pedal position signal T R R Closed throttle position signal T R Wide open throttle position signal T R Battery voltage signal T R Key switch signal T R Ignition switch signal T R R P range signal T R R Stop lamp switch signal R T ABS operation signal R T TCS operation signal R T VDC operation signal R T Fuel consumption monitor signal T R R Input shaft revolution signal R T Output shaft revolution signal R T A/C switch signal R T A/C compressor request signal T R A/C relay status signal R T A/C compressor feedback signal T R Blower fan motor switch signal R T LAN-8 [CAN] CAN COMMUNICATION Revision; 2004 April 2003 FX A/C control signal TR RT Cooling fan speed request signal T R Cooling fan speed signal R T Position light request signal R T R R Low beam request signal T R Low beam status signal R T High beam request signal T R R High beam status signal R T Front fog light request signal T R Day time running light request signal T R Turn LED burnout status signal R T Vehicle speed signal RT RRRR T R Sleep wake up signal T R R R Door switch signal R T R R R Turn indicator signal T R Key fob ID signal T R Key fob door unlock signal T R Oil pressure switch signal RT TR Buzzer output signal T R Fuel level sensor signal R T Fuel level low warning signal R T ASCD operation signal T R ASCD OD cancel request T R Front wiper request signal T R Front wiper stop position signal R T Rear window defogger switch signal T R Rear window defogger control signal R R R T Hood switch signal R T Theft warning horn request signal T R Horn chirp signal T R Steering angle sensor signal T R ABS warning lamp signal RT VDC OFF indicator lamp signal R T SLIP indicator lamp signal RT Brake warning lamp signal RT System setting signal T R R A/T CHECK indicator lamp signal T R Signals ECM TCM Dis- play unit BCM Steer- ing angle sensor Unified meter and A/ C amp. ABS actua- tor and electric unit (con- trol unit) Driver seat control unit IPDM E/R CAN COMMUNICATION LAN-9 [CAN] C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX TYPE 3 System Diagram ● Type3 Input/output Signal Chart T: Transmit R: Receive A/T position indicator lamp signal T R A/T shift schedule change demand signal R T Manual mode signal R T Not manual mode signal R T Manual mode shift up signal R T Manual mode shift down signal R T Manual mode indicator signal T R Distance to empty signal R T Hand brake switch R T Signals ECM TCM Dis- play unit BCM Steer- ing angle sensor Unified meter and A/ C amp. ABS actua- tor and electric unit (con- trol unit) Driver seat control unit IPDM E/R SKIA6173E Signals ECM TCM Dis- play con- trol unit Low tire pres- sure warn- ing con- trol unit ICC unit Intelli- gent Key unit BCM Steeri ng angle sen- sor Uni- fied meter and A/C amp. ICC sen- sor ABS actu- ator and elec- tric unit (con- trol unit) Driver seat con- trol unit IPDM E/R Engine speed signal T R R R R R Engine status signal T R Engine coolant tempera- ture signal TR R R A/T self-diagnosis signal R T LAN-10 [CAN] CAN COMMUNICATION Revision; 2004 April 2003 FX Accelerator pedal posi- tion signal TR R R Closed throttle position signal TR R Wide open throttle posi- tion signal TR Battery voltage signal T R Key switch signal T R Ignition switch signal T R R P range signal T R R R Stop lamp switch signal R T ABS operation signal R R T TCS operation signal R R T VDC operation signal R R T Fuel consumption moni- tor signal TR R Input shaft revolution sig- nal RT R Output shaft revolution signal RT R A/C switch signal R T A/C compressor request signal T R A/C relay status signal R T A/C compressor feed- back signal TR Blower fan motor switch signal RT A/C control signal TR RT Cooling fan speed signal R T Position light request sig- nal RTRR Low beam request signal T R Low beam status signal R T High beam request sig- nal TR R High beam status signal R T Front fog light request signal TR Day time running light request signal TR Signals ECM TCM Dis- play con- trol unit Low tire pres- sure warn- ing con- trol unit ICC unit Intelli- gent Key unit BCM Steeri ng angle sen- sor Uni- fied meter and A/C amp. ICC sen- sor ABS actu- ator and elec- tric unit (con- trol unit) Driver seat con- trol unit IPDM E/R [...]... Revision; 2004 April LAN- 33 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 8 Check BCM circuit Refer to LAN- 43, "BCM Circuit Check" PKIA7935E SKIA6565E Revision; 2004 April LAN- 34 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 9 A Check steering angle sensor circuit Refer to LAN- 44, "Steering Angle Sensor Circuit Check" B C D E F PKIA7936E G H I J LAN SKIA6566E L M Revision; 2004 April LAN- 35 2003 FX CAN SYSTEM (TYPE... LAN- 41, "Circuit Check Between Unified Meter and A/C Amp and ABS Actuator and Electric Unit (Control Unit)" A B C D E F PKIA7930E G H I J LAN L SKIA6560E M Revision; 2004 April LAN- 29 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 4 Check ECM circuit Refer to LAN- 41, "ECM Circuit Check" PKIA7931E SKIA6561E Revision; 2004 April LAN- 30 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 5 A Check TCM circuit Refer to LAN- 42,... PKIA7932E G H I J LAN SKIA6562E L M Revision; 2004 April LAN- 31 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 6 Check display unit circuit Refer to LAN- 42, "Display Unit Circuit Check" PKIA7933E SKIA6563E Revision; 2004 April LAN- 32 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 7 A Check data link connector circuit Refer to LAN- 43, "Data Link Connector Circuit Check" B C D E F PKIA7934E G H I J LAN SKIA6564E L M... Refer to LAN- 27, "CHECK SHEET RESULTS (EXAMPLE)" Revision; 2004 April LAN- 24 2003 FX CAN SYSTEM (TYPE 1) [CAN] CHECK SHEET NOTE: If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit, replace the control unit A B C D E F G H I J LAN L M PKIA7926E Revision; 2004 April LAN- 25 2003 FX CAN SYSTEM (TYPE 1) [CAN] PKIA7927E Revision; 2004 April LAN- 26 2003 FX... Refer to LAN- 40, "Circuit Check Between TCM and Data Link Connector" C D E F G PKIA7928E H I J LAN L M SKIA6558E Revision; 2004 April LAN- 27 2003 FX CAN SYSTEM (TYPE 1) [CAN] Case 2 Check harness between data link connector and unified meter and A/C amp Refer to LAN- 40, "Circuit Check Between Data Link Connector and Unified Meter and A/C Amp." PKIA7929E SKIA6559E Revision; 2004 April LAN- 28 2003 FX... data only Component Parts and Harness Connector Location AKS007Q1 SKIA7126E Revision; 2004 April LAN- 20 2003 FX CAN SYSTEM (TYPE 1) [CAN] Wiring Diagram - CAN - AKS007Q3 A B C D E F G H I J LAN L M TKWM0657E Revision; 2004 April LAN- 21 2003 FX CAN SYSTEM (TYPE 1) [CAN] TKWH0247E Revision; 2004 April LAN- 22 2003 FX CAN SYSTEM (TYPE 1) [CAN] Work Flow 1 AKS00C4A When there are no indications of “BCM”,... "CAN Communication Line Inspection" Attach the CAN DIAG MONITOR check sheet onto the check sheet Refer to LAN- 25, "CHECK SHEET" Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG MONITOR check sheet Refer to LAN- 25, "CHECK SHEET" Revision; 2004 April LAN- 23 2003 FX M CAN SYSTEM (TYPE 1) [CAN] 9 NOTE: If “NG” is displayed on “CAN COMM” as “CAN DIAG MNTR” for the... R LAN A/T CHECK indicator lamp signal T R A/T position indicator lamp signal T R A/T shift schedule change demand signal R Manual mode signal R T Not manual mode signal R T Manual mode shift up signal R T Manual mode shift down signal R T Manual mode indicator signal T R Revision; 2004 April L T LAN- 15 M 2003 FX CAN COMMUNICATION [CAN] TYPE 6 System Diagram q Type6 SKIA6176E Revision; 2004 April LAN- 16... BCM R T T R LAN- 13 2003 FX M CAN COMMUNICATION [CAN] Signals ECM TCM Display unit AWD control unit BCM Steering angle sensor Unified meter and A/ C amp ABS actuator and electric unit (control unit) Driver seat control unit Key switch signal T R Ignition switch signal T R IPDM E/R P range signal T Closed throttle position signal T T R Engine speed signal T R Engine status signal T Engine coolant temperature... signal R T Theft warning horn request signal T R Horn chirp signal T R LAN T Rear window defogger control signal R L R R Steering angle sensor signal T Tire pressure signal Tire pressure data signal T R R R T ABS warning lamp signal R R T VDC OFF indicator lamp signal R R T R T SLIP indicator lamp signal Revision; 2004 April LAN- 11 2003 FX M CAN COMMUNICATION [CAN] Signals ECM TCM Display control unit . 123456 CAN system trouble diagnosis LAN- 20 LAN- 51 LAN- 86 LAN- 132 LAN- 166 LAN- 205 SKIA6171E CAN COMMUNICATION LAN- 7 [CAN] C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX ● Type2 Input/output. LAN- 1 LAN SYSTEM K ELECTRICAL CONTENTS C D E F G H I J L M SECTION LAN A B LAN Revision; 2004 April 2003 FX LAN SYSTEM CAN PRECAUTIONS 4 Precautions for. E/R LAN- 16 [CAN] CAN COMMUNICATION Revision; 2004 April 2003 FX TYPE 6 System Diagram ● Type6 SKIA6176E CAN COMMUNICATION LAN- 17 [CAN] C D E F G H I J L M A B LAN Revision; 2004 April 2003 FX Input/output